Riveting-machine.



2 Sheets-Sheet l.

@Mwh. 1 O

m 636,103. Y Patented Oct. 3|, I899. W. P. BARTEL. RIVETING MACHiNE. (Application filed JuLB, 1899.)

(No Model.)

mun

a I a hllllll Aw-masses:

No. 636,103. Patenteu'ocnsl, I899. w. P. BARTEL.

BIVETING MACHINE.

(Application filed Jan. 8, 1899.)

2 Sheets-Sheet L (No Model.)

a bed or impact-block a to which riveting- UNITED STATES PATENT FFrcEi.

WILLIAM P. BARTEL, OF WALTHAM, MASSAOHUSETTS, ASSIGNOROF THREE- FOURTHS TO THE JUDSON L. THOMSON MANUFACTURING COMPANY, OF

SAME PLACE.

RIVETING-MACHIINE.

SPECIFICATION forming part of Letters Patent No. 636,103 dated October 31, 1899.

Application filed January 6, 1899.

To all ugh/0111 it may concern:

Be it known that I, WILLIAM P. BARTEL, of Waltham, in the countyof Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Riveting-Machines, of which the following is a specification.

This invention has relation to attachments or devices for feeding rivet-caps or other parts of rivets to a riveting-machine.

The'invention consists of the improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a side elevation of a riveting-machine provided with my improved feeder. Fig. 1 represents a view in section and side elevation, showing a rivet and its cap. Fig. 2 repre-' sents a Vertical sectional view of the feeder. Fig. 3 represents a horizontal section thereof on the line 3 3 of Fig. 2. Figs. 4, 5, and 6 represent detail sectional views, on'an enlarged scale, on the "correspondingly numbered lines of Fig. 3. Fig. 7 represents a perspective view of .the feeder with parts removed. Figs. 8 and 9 represent detail plan views, on an enlarged scale, showing the feeding devices at the-lower end of the feed'chute 0r raceway. Figs. 10 and 11 represent detail sectional views of a modification hereinafter referred to.

The same reference characters represent the same parts in all the figures.

My improved attachment may be applied to various types of riveting-machines, the machine shown in the drawings being of approved pattern and selected merely for the purpose of illustration. 7

The machine shown has a frame a, a riveting-bar a,driven by suitable mechanism, and

caps are fed through a chute or raceway c from a hopper b. The rivets may be supplied through a chute a from another hopper suitably located.

In Fig. 1*,r represents a rivet of well-known pattern, having a head and two prongs r 1*, which are forced through the layers or thickd, pivotally mounted on an arm d ncsses of material which are to be riveted to- Serial No. 701,32s'. (No model.)

ticularly adapted for feeding caps of this pattern to a riveting-machine, which clenches the rivet and cap together.

The hopper b is mounted in an inclined position at one side of the riveting-machine and is composed of a base Z) and the cover 19 Through the lower part of the latter is insorted the end of a funnel I), through which the caps are introduced into the interior of the hopper.

01 represents a carrier mounted to rotate inside of the hopper and slightly cup or bowl shaped on its upper side, as shown. The stem cl of the carrier projects through the base I) of the hopper and below the latter is provided with a ratchet-wheel d engaged by a paigl T e latter isoscillated by means of a connection with a suitable part of the riveting-machine, andthe carrier d is thereby rotated step by step inside the hopper. On the margin of the carrier is formed a raised annular bead or rib d divided into a number of pockets-d d each of asize to accommodate one of the caps r. The width of the said rib is slightly less than that of the disks or caps r. The bottom of each recess (:1 is provided with an upwardly-directed rojection or point d having inclined sides siaped to fit the recesses r formed on the under side of each of the caps r.

The chute c is provided with a cover 0 and projects into the hopper b at one side thereof. The extreme end of the chute is inclined at an angle to the plane of the carrier d and is bifurcated or formed with legs 0 0 which pass on either side of the annular rib d the ends of these legs being slightly below the level of the caps as they rest in the pockets d, with their edges projecting beyond the carrier d is rotated in the direction of the ar row, Fig. 3, the said caps will fall into the pockets d and will be carried around toward the mouth of the chute 0. Every cap r that is properly positioned in its pocket 01 has its edges engaged by the legs 0 as it reaches the end of the chute and is thereby lifted by reason of the rotation of the carrier out of its pocket onto the floor of the chute and tends to slide by gravitation down through the chute toward the riveting devices. If, however, any of the caps enter the pockets upside down, they will not fit accurately therein and will be brushed ofi and returned to the bottom of the hopper by means of a curved metal arm or brush f, attached to the base I) of the hopper and having its free end in.close proximity to the upper edge of the rib d and inclined toward the interior of the hopper. Those caps which are properly positioned pass beneath the end of the brush f without touching the latter, because they are settled or fitted in the pockets of the rib, and just beyond the said brush they pass underneath a stationary sheet-metal guard e and are held thereby in their proper places until they reach the end of the chute c and are lifted out of the pockets by means of the legs 0, as hereinbefore described, and illustrated in Fig. 5.

The carrier (1 rotates at such a rate as to supply the caps to the riveting apparatus faster than they could be used if all the pockets in the carrier were filled, thereby providing an excess to make up for the pockets emptied by the brush f. Provision is made as follows for returning the excess of caps from the feeder back into the hopper when the chute is full: 0 represents the mouth of the chute proper, and above said mouth the chute is open at one side, and its floor is prolonged into the hopper to form a shelf 0 In the opposite wall of the chute is formed a recess 0 Above the said shelf and recess the chute is contracted to its normal width, which is slightly greater than the width of the disks orcaps 4'. Then the chute is filled up to its mouth 0 the caps, which are removed from the carrier by means of the legs 0, after passing through the said contracted portion are crowded out onto the shelf a and fall back into the pile of caps in the lower part of the hopper. Thus if the caps are fed faster than they are used the excess is merely returned and fed over again. NVhen the chute is filled up to its mouth 0 if a further accumulation of caps were to form in a straight line above said mouth there would be a tendency to jam the caps by the continued action of the carrier forcing caps under the guard e and then up over the legs 0 and under the cover of the upper end of the chute. To prevent this accumulation of caps from extendingin a straight line above the mouth 0 the wall of the chute opposite the shelf 0 is formed with a recess a, as above mentioned. Therefore the caps on the floor of the chute above the mouth 0 may extend in a deflected line into the recess 0 so that the edges of the caps opposite said recessed wall will form a laterally-inclined guideway for the surplus of caps that may be supplied, thus preventing any jamming of the caps.

In Figs. 8 and 9, representing the lower end of the feed-chute or raceway 0, 0 represents an oscillatory feed-disk actuated by an arm 0 connected with a suitable part of the rivetingmachine and adapted to feed the caps '2" one by one to the action of the rivetingbar a.

In Figs. 10 and 11 I show the bottoms of the pockets in the rib d provided with conical depressions instead of the conical projection above described. This form of pocketbottom is intended for use with caps r having fiat outer surfaces r and conical inner surfaces r. In this case the conical surfaces r of the caps rest in the conical depressions of the pockets when properly positioned, as shown in Fig. 10, the caps when in this position passing under the brush f without being displaced. If, however, a cap is in the position shown in Fig. 11, it is raised so high that it will be displaced by the brush. The chute used with this form of carrier will have a half-turn to deliver the caps with their conical sides upp rmost.

Having thus explained the nature of my invention and described a way of constructing and using the same, though without attempting to set forth all of the forms in which it may be made or all of the modes of its use, whatI claim, and desire to secure by Letters Patent, is

1. In a device for feeding rivet-caps, an inclined carrier having a circular series of pockets in its bottom for the caps, said pockets having uneven bottoms to fit uneven sides of the caps, a chute, and means for lifting the caps from the pockets and directing them into the chute.

2. In a device for feeding rivet-caps, an inclined carrier having an annular rib formed on its bottom with pockets for receiving the caps, said rib being of less width than the caps, a chute, and means cooperating with the rib for directing the caps into the chute.

3. In a device for feeding rivet-caps having a depression on one face, a carrier provided with pockets for said caps, the said pockets each having a projection adapted to fit the depression in the cap.

4. In a device for feeding rivet-caps, a hopper, a chute leading therefrom and having its upper end abovea portion of the bottom thereof, a carrier adapted to take caps from the hopper and deliver them to the chute, and means for removing the caps from the carrier and directing them to the chute, the said chute having an opening in one side within the hopper and a recess in its wall opposite said opening whereby overcrowding the chute is prevented.

5. In a device for feeding rivet-caps,- an inclined carrier for the caps, a chute, a remover for removing the caps from the carrier and directing them into the chute, and a guard located in advance of the remover and adapted to hold the caps in place in the carrier.

6. In a device for feeding rivet-caps, a hopper, a carrier located therein and adapted to take caps therefrom, said carrier having a circular series of pockets with uneven bottoms, and a brush or remover located above the plane of the path of movement of 'caps properly fitted in said pockets and adapted to remove capslyin g in said pockets but not fitted to the uneven bottoms thereof.

7. I11 a device for feeding rivet-caps, a hopper having an inclined bottom, a chute leading therefrom,a carrierlocated in and adapted to take caps from the hopper and deliver them to the chute, a guard for holding the caps in place in the carrier previous to their delivery to the chute, and a brush located in advance of said guard and adapted to remove loose caps from the carrier and return them to the hopper.

In testimony whereof I have affixed my signature in presence of two witnesses.

WILLIAM P. BARTEL. Witnesses:

O. F. BROWN, E. BATOHELDER. 

